42431162031 has 24 divisors (see below), whose sum is σ = 64481215344. Its totient is φ = 26851616640.

The previous prime is 42431162029. The next prime is 42431162047. The reversal of 42431162031 is 13026113424.

It is a happy number.

42431162031 is a `hidden beast` number, since 4 + 2 + 4 + 3 + 1 + 1 + 620 + 31 = 666.

It is not a de Polignac number, because 42431162031 - 2¹ = 42431162029 is a prime.

It is a super-2 number, since 2×42431162031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42431161986 and 42431162004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42431162021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1540261 + ... + 1567566.

It is an arithmetic number, because the mean of its divisors is an integer number (2686717306).

Almost surely, 2^42431162031 is an apocalyptic number.

42431162031 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42431162031 is a deficient number, since it is larger than the sum of its proper divisors (22050053313).

42431162031 is a wasteful number, since it uses less digits than its factorization.

42431162031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107911 (or 3107908 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 42431162031 its reverse (13026113424), we get a palindrome (55457275455).

The spelling of 42431162031 in words is "forty-two billion, four hundred thirty-one million, one hundred sixty-two thousand, thirty-one".